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收割机刀片是收割机中的主要工作零件,原来采用T9A经高频淬火后低温回火;或定刀采用45钢淬火后镀铬,动力为T8钢高频淬火。存在问题较多:动刀不耐磨,定刀既不耐磨又脆,易掉齿,使用寿命很低。割麦子平均在700～1000亩/米割幅;割稻子在割茬较低(2～4厘米)时平均在100～200亩/米割幅。由于刀片寿命低对收割速度及质量都影响很大,耽误农时,有些地区反映,刀片寿命顶不下一个收获季节,丰产不能丰收。
Harvester blade is harvester in the main working parts, the original use of T9A after high-frequency quenching low-temperature tempering; or fixed-knife 45 steel quenched chrome, power T8 steel high-frequency quenching. There are more problems: knife does not wear, fixed knife neither wear and brittle, easy to fall teeth, low service life. The average number of wheat cuttings is 700-1000 mu / m; the number of cut rice is 100-200 mu / m on the average when cutting stubble is low (2-4 cm). Due to the low blade life on the harvesting speed and quality are greatly affected, delay farming, reflecting in some areas, blade life no less than a harvest season, high yield can not harvest.